Clean off dirt and dust from the air release valve on the wheel, from which air will be removed
- 2. Check and, if necessary, add brake fluid to the reservoir up to the maximum mark.
- 3. Remove the protective cap from the air release valve and put a rubber hose on the valve head to drain the liquid.
- 4. Immerse the end of the hose in a clean, transparent container partially filled with brake fluid.
- 5. Press the brake pedal sharply 4-5 times (with an interval between pressing 1-2 s), and then, leaving the pedal depressed, unscrew the air release valve by ½ - ¾ turn. In this case, air bubbles will be visible in the liquid flowing from the hose.
After the flow of fluid from the hose stops, tighten the air release valve tightly and release the brake pedal.
6. Repeat step 5 until the release of bubbles from the flowing liquid completely stops.
In this case, it is necessary to monitor the level of brake fluid in the reservoir and add brake fluid to the reservoir, preventing the level in it from dropping below the “min” mark.
- 7. Remove the hose, wipe the end of the valve and put on the cap.
- 8. Bleed, if necessary, the brake mechanisms of the remaining wheels.
If work was carried out on the brake of one wheel only, it is enough to bleed only the cylinder of this wheel.
If the bleeding of the brake system is not done thoroughly enough, then when you press the pedal at the end of its stroke, an increased “softness” of the pedal will be felt.
This operation is performed by two people in compliance with safety regulations, as the brake fluid is toxic.
Priority when pumping the entire system:
- - rear right wheel;
- - rear left wheel;
- - front right wheel;
- - front left wheel.
Only use new brake fluid when topping up or replacing.
Do not reuse brake fluid drained during bleeding.
If work is being done on a lift, then press the pressure regulator rod before bleeding the rear circuit.
Remove the protective cap from the rear right wheel cylinder bleed valve and, putting on a transparent hose, immerse its free end in a container partially filled with brake fluid.
Depress the brake pedal 4-5 times.
Without releasing it, turn off the air release valve with a 10 key for 1/3–1/2 turn. Air bubbles will be visible in the liquid flowing from the hose.
After the pedal "goes" forward to the stop, squeezing a portion of the liquid from the system into the container, we wrap the valve and only then release the pedal.
Repeat pumping until air bubbles from the hose completely stop.
Having removed the hose, put on the protective cap.
In the same way, we pump the rear left, front right and front left brake mechanisms (in the specified order).
If air remains in the system, then when you press the brake pedal, its elasticity will be felt. In this case, repeat pumping until the pedal becomes "hard".
If bubbles continue to come out of the hose even after prolonged air removal, check the tightness of the connections, pipelines, hoses, main and working cylinders.
Tighten leaking connections, and replace faulty O-rings and cuffs.
After bleeding, add clean recommended brake fluid to the reservoir up to the MAX mark and install the reservoir cap with an emergency level drop sensor.
When changing the brake fluidbleeding should be carried out until fresh brake fluid (it is lighter) starts to come out of the bleeders of all brake cylinders.